diff --git a/apps/opencs/CMakeLists.txt b/apps/opencs/CMakeLists.txt
index 828584452..30e9203f5 100644
--- a/apps/opencs/CMakeLists.txt
+++ b/apps/opencs/CMakeLists.txt
@@ -68,7 +68,7 @@ opencs_units (view/world
 
 opencs_units_noqt (view/world
     subviews enumdelegate vartypedelegate recordstatusdelegate idtypedelegate datadisplaydelegate
-    scripthighlighter idvalidator dialoguecreator physicssystem
+    scripthighlighter idvalidator dialoguecreator physicssystem physicsmanager
     )
 
 opencs_units (view/widget
diff --git a/apps/opencs/editor.cpp b/apps/opencs/editor.cpp
index b566bbe5d..591667ebb 100644
--- a/apps/opencs/editor.cpp
+++ b/apps/opencs/editor.cpp
@@ -21,7 +21,7 @@
 
 CS::Editor::Editor (OgreInit::OgreInit& ogreInit)
 : mUserSettings (mCfgMgr), mOverlaySystem (0), mDocumentManager (mCfgMgr),
-  mViewManager (mDocumentManager), mPhysicsSystem (0),
+  mViewManager (mDocumentManager), mPhysicsManager (0),
   mIpcServerName ("org.openmw.OpenCS"), mServer(NULL), mClientSocket(NULL)
 {
     std::pair<Files::PathContainer, std::vector<std::string> > config = readConfig();
@@ -34,7 +34,7 @@ CS::Editor::Editor (OgreInit::OgreInit& ogreInit)
     ogreInit.init ((mCfgMgr.getUserConfigPath() / "opencsOgre.log").string());
 
     mOverlaySystem.reset (new CSVRender::OverlaySystem);
-    mPhysicsSystem.reset (new CSVWorld::PhysicsSystem);
+    mPhysicsManager.reset (new CSVWorld::PhysicsManager);
 
     Bsa::registerResources (Files::Collections (config.first, !mFsStrict), config.second, true,
         mFsStrict);
diff --git a/apps/opencs/editor.hpp b/apps/opencs/editor.hpp
index 4d2fdc2eb..d55b0e873 100644
--- a/apps/opencs/editor.hpp
+++ b/apps/opencs/editor.hpp
@@ -28,7 +28,7 @@
 
 #include "view/settings/dialog.hpp"
 #include "view/render/overlaysystem.hpp"
-#include "view/world/physicssystem.hpp"
+#include "view/world/physicsmanager.hpp"
 
 namespace OgreInit
 {
@@ -45,7 +45,7 @@ namespace CS
             Files::ConfigurationManager mCfgMgr;
             CSMSettings::UserSettings mUserSettings;
             std::auto_ptr<CSVRender::OverlaySystem> mOverlaySystem;
-            std::auto_ptr<CSVWorld::PhysicsSystem> mPhysicsSystem;
+            std::auto_ptr<CSVWorld::PhysicsManager> mPhysicsManager;
             CSMDoc::DocumentManager mDocumentManager;
             CSVDoc::ViewManager mViewManager;
             CSVDoc::StartupDialogue mStartup;
diff --git a/apps/opencs/view/doc/view.cpp b/apps/opencs/view/doc/view.cpp
index 8a6665cf2..8b5efbea7 100644
--- a/apps/opencs/view/doc/view.cpp
+++ b/apps/opencs/view/doc/view.cpp
@@ -16,6 +16,7 @@
 #include "../../model/world/idtable.hpp"
 
 #include "../world/subviews.hpp"
+#include "../world/physicsmanager.hpp"
 
 #include "../tools/subviews.hpp"
 
@@ -406,6 +407,8 @@ CSVDoc::View::View (ViewManager& viewManager, CSMDoc::Document *document, int to
     mSubViewFactory.add (CSMWorld::UniversalId::Type_RunLog, new SubViewFactory<RunLogSubView>);
 
     connect (mOperations, SIGNAL (abortOperation (int)), this, SLOT (abortOperation (int)));
+
+    CSVWorld::PhysicsManager::instance()->setupPhysics(document);
 }
 
 CSVDoc::View::~View()
diff --git a/apps/opencs/view/render/cell.cpp b/apps/opencs/view/render/cell.cpp
index 52e233598..75e11cc10 100644
--- a/apps/opencs/view/render/cell.cpp
+++ b/apps/opencs/view/render/cell.cpp
@@ -51,7 +51,7 @@ bool CSVRender::Cell::addObjects (int start, int end)
             std::string id = Misc::StringUtils::lowerCase (references.data (
                 references.index (i, idColumn)).toString().toUtf8().constData());
 
-            mObjects.insert (std::make_pair (id, new Object (mData, mCellNode, id, false)));
+            mObjects.insert (std::make_pair (id, new Object (mData, mCellNode, id, false, mPhysics)));
             modified = true;
         }
     }
@@ -60,8 +60,8 @@ bool CSVRender::Cell::addObjects (int start, int end)
 }
 
 CSVRender::Cell::Cell (CSMWorld::Data& data, Ogre::SceneManager *sceneManager,
-    const std::string& id, const Ogre::Vector3& origin)
-: mData (data), mId (Misc::StringUtils::lowerCase (id)), mSceneMgr(sceneManager)
+    const std::string& id, CSVWorld::PhysicsSystem *physics, const Ogre::Vector3& origin)
+: mData (data), mId (Misc::StringUtils::lowerCase (id)), mSceneMgr(sceneManager), mPhysics(physics)
 {
     mCellNode = sceneManager->getRootSceneNode()->createChildSceneNode();
     mCellNode->setPosition (origin);
@@ -88,26 +88,17 @@ CSVRender::Cell::Cell (CSMWorld::Data& data, Ogre::SceneManager *sceneManager,
         {
             float verts = ESM::Land::LAND_SIZE;
             float worldsize = ESM::Land::REAL_SIZE;
-            CSVWorld::PhysicsSystem::instance()->addHeightField(sceneManager,
-                    esmLand->mLandData->mHeights, esmLand->mX, esmLand->mY, 0, worldsize / (verts-1), verts);
+            mX = esmLand->mX;
+            mY = esmLand->mY;
+            mPhysics->addHeightField(sceneManager,
+                    esmLand->mLandData->mHeights, mX, mY, 0, worldsize / (verts-1), verts);
         }
     }
 }
 
 CSVRender::Cell::~Cell()
 {
-    // TODO: maybe store the cell coordinates rather than searching for them in the destructor?
-    if(mTerrain.get())
-    {
-        const CSMWorld::IdCollection<CSMWorld::Land>& land = mData.getLand();
-        int landIndex = land.searchId(mId);
-        if (landIndex != -1)
-        {
-            const ESM::Land* esmLand = land.getRecord(mId).get().mLand.get();
-            if(esmLand)
-                CSVWorld::PhysicsSystem::instance()->removeHeightField(mSceneMgr, esmLand->mX, esmLand->mY);
-        }
-    }
+    mPhysics->removeHeightField(mSceneMgr, mX, mY);
 
     for (std::map<std::string, Object *>::iterator iter (mObjects.begin());
         iter!=mObjects.end(); ++iter)
@@ -201,7 +192,7 @@ bool CSVRender::Cell::referenceDataChanged (const QModelIndex& topLeft,
     for (std::map<std::string, bool>::iterator iter (ids.begin()); iter!=ids.end(); ++iter)
     {
         mObjects.insert (std::make_pair (
-            iter->first, new Object (mData, mCellNode, iter->first, false)));
+            iter->first, new Object (mData, mCellNode, iter->first, false, mPhysics)));
 
         modified = true;
     }
diff --git a/apps/opencs/view/render/cell.hpp b/apps/opencs/view/render/cell.hpp
index 2badc84d2..8bc58714a 100644
--- a/apps/opencs/view/render/cell.hpp
+++ b/apps/opencs/view/render/cell.hpp
@@ -23,6 +23,11 @@ namespace CSMWorld
     class Data;
 }
 
+namespace CSVWorld
+{
+    class PhysicsSystem;
+}
+
 namespace CSVRender
 {
     class Cell
@@ -32,7 +37,10 @@ namespace CSVRender
             Ogre::SceneNode *mCellNode;
             std::map<std::string, Object *> mObjects;
             std::auto_ptr<Terrain::TerrainGrid> mTerrain;
+            CSVWorld::PhysicsSystem *mPhysics;
             Ogre::SceneManager *mSceneMgr;
+            int mX;
+            int mY;
 
             /// Ignored if cell does not have an object with the given ID.
             ///
@@ -46,8 +54,8 @@ namespace CSVRender
 
         public:
 
-            Cell (CSMWorld::Data& data, Ogre::SceneManager *sceneManager,
-                const std::string& id, const Ogre::Vector3& origin = Ogre::Vector3 (0, 0, 0));
+            Cell (CSMWorld::Data& data, Ogre::SceneManager *sceneManager, const std::string& id,
+                CSVWorld::PhysicsSystem *physics, const Ogre::Vector3& origin = Ogre::Vector3 (0, 0, 0));
 
             ~Cell();
 
diff --git a/apps/opencs/view/render/object.cpp b/apps/opencs/view/render/object.cpp
index 474c79b35..395a4d57e 100644
--- a/apps/opencs/view/render/object.cpp
+++ b/apps/opencs/view/render/object.cpp
@@ -34,7 +34,7 @@ void CSVRender::Object::clearSceneNode (Ogre::SceneNode *node)
 void CSVRender::Object::clear()
 {
     if(!mObject.isNull())
-        CSVWorld::PhysicsSystem::instance()->removeObject(mBase->getName());
+        mPhysics->removeObject(mBase->getName());
 
     mObject.setNull();
 
@@ -79,7 +79,7 @@ void CSVRender::Object::update()
         mObject = NifOgre::Loader::createObjects (mBase, "Meshes\\" + model);
         mObject->setVisibilityFlags (Element_Reference);
 
-        if (!mReferenceId.empty())
+        if (mPhysics && !mReferenceId.empty())
         {
             const CSMWorld::CellRef& reference = getReference();
 
@@ -93,8 +93,7 @@ void CSVRender::Object::update()
             Ogre::Quaternion yr (Ogre::Radian (-reference.mPos.rot[1]), Ogre::Vector3::UNIT_Y);
             Ogre::Quaternion zr (Ogre::Radian (-reference.mPos.rot[2]), Ogre::Vector3::UNIT_Z);
 
-            CSVWorld::PhysicsSystem::instance()->addObject("meshes\\" + model,
-                                        mBase->getName(), mReferenceId, reference.mScale, position, xr*yr*zr);
+            mPhysics->addObject("meshes\\" + model, mBase->getName(), mReferenceId, reference.mScale, position, xr*yr*zr);
         }
     }
 }
@@ -133,8 +132,9 @@ const CSMWorld::CellRef& CSVRender::Object::getReference() const
 }
 
 CSVRender::Object::Object (const CSMWorld::Data& data, Ogre::SceneNode *cellNode,
-    const std::string& id, bool referenceable, bool forceBaseToZero)
-: mData (data), mBase (0), mForceBaseToZero (forceBaseToZero)
+    const std::string& id, bool referenceable, CSVWorld::PhysicsSystem *physics,
+    bool forceBaseToZero)
+: mData (data), mBase (0), mForceBaseToZero (forceBaseToZero), mPhysics(physics)
 {
     mBase = cellNode->createChildSceneNode();
 
diff --git a/apps/opencs/view/render/object.hpp b/apps/opencs/view/render/object.hpp
index 6a8a933e5..eba2dc814 100644
--- a/apps/opencs/view/render/object.hpp
+++ b/apps/opencs/view/render/object.hpp
@@ -16,6 +16,11 @@ namespace CSMWorld
     class CellRef;
 }
 
+namespace CSVWorld
+{
+    class PhysicsSystem;
+}
+
 namespace CSVRender
 {
     class Object
@@ -26,6 +31,7 @@ namespace CSVRender
             Ogre::SceneNode *mBase;
             NifOgre::ObjectScenePtr mObject;
             bool mForceBaseToZero;
+            CSVWorld::PhysicsSystem *mPhysics;
 
             /// Not implemented
             Object (const Object&);
@@ -51,7 +57,8 @@ namespace CSVRender
         public:
 
             Object (const CSMWorld::Data& data, Ogre::SceneNode *cellNode,
-                const std::string& id, bool referenceable, bool forceBaseToZero = false);
+                const std::string& id, bool referenceable,
+                CSVWorld::PhysicsSystem *physics = NULL, bool forceBaseToZero = false);
             /// \param forceBaseToZero If this is a reference ignore the coordinates and place
             /// it at 0, 0, 0 instead.
 
diff --git a/apps/opencs/view/render/pagedworldspacewidget.cpp b/apps/opencs/view/render/pagedworldspacewidget.cpp
index b39f3733f..49e7e1f09 100644
--- a/apps/opencs/view/render/pagedworldspacewidget.cpp
+++ b/apps/opencs/view/render/pagedworldspacewidget.cpp
@@ -109,7 +109,7 @@ bool CSVRender::PagedWorldspaceWidget::adjustCells()
             mCells.find (*iter)==mCells.end())
         {
             Cell *cell = new Cell (mDocument.getData(), getSceneManager(),
-                    iter->getId (mWorldspace));
+                    iter->getId (mWorldspace), getPhysics());
             mCells.insert (std::make_pair (*iter, cell));
 
             float height = cell->getTerrainHeightAt(Ogre::Vector3(
diff --git a/apps/opencs/view/render/previewwidget.cpp b/apps/opencs/view/render/previewwidget.cpp
index 75b4e9396..f972c6361 100644
--- a/apps/opencs/view/render/previewwidget.cpp
+++ b/apps/opencs/view/render/previewwidget.cpp
@@ -10,7 +10,7 @@
 CSVRender::PreviewWidget::PreviewWidget (CSMWorld::Data& data,
     const std::string& id, bool referenceable, QWidget *parent)
 : SceneWidget (parent), mData (data),
-  mObject (data, getSceneManager()->getRootSceneNode(), id, referenceable, true)
+  mObject (data, getSceneManager()->getRootSceneNode(), id, referenceable, NULL, true)
 {
     setNavigation (&mOrbit);
 
diff --git a/apps/opencs/view/render/scenewidget.cpp b/apps/opencs/view/render/scenewidget.cpp
index 5611c2243..55cf039fc 100644
--- a/apps/opencs/view/render/scenewidget.cpp
+++ b/apps/opencs/view/render/scenewidget.cpp
@@ -13,8 +13,6 @@
 #include <OgreViewport.h>
 #include <OgreOverlaySystem.h>
 
-#include "../world/physicssystem.hpp"
-
 #include "../widget/scenetoolmode.hpp"
 #include "../../model/settings/usersettings.hpp"
 
@@ -66,8 +64,6 @@ namespace CSVRender
         mOverlaySystem = OverlaySystem::instance().get();
         mSceneMgr->addRenderQueueListener(mOverlaySystem);
 
-        CSVWorld::PhysicsSystem::instance()->addSceneManager(mSceneMgr, this);
-
         QTimer *timer = new QTimer (this);
 
         connect (timer, SIGNAL (timeout()), this, SLOT (update()));
@@ -166,8 +162,6 @@ namespace CSVRender
 
     SceneWidget::~SceneWidget()
     {
-        CSVWorld::PhysicsSystem::instance()->removeSceneManager(mSceneMgr);
-
         if (mWindow)
             Ogre::Root::getSingleton().destroyRenderTarget (mWindow);
 
diff --git a/apps/opencs/view/render/unpagedworldspacewidget.cpp b/apps/opencs/view/render/unpagedworldspacewidget.cpp
index aab3791fc..8012b1b24 100644
--- a/apps/opencs/view/render/unpagedworldspacewidget.cpp
+++ b/apps/opencs/view/render/unpagedworldspacewidget.cpp
@@ -56,7 +56,7 @@ CSVRender::UnpagedWorldspaceWidget::UnpagedWorldspaceWidget (const std::string&
 
     update();
 
-    mCell.reset (new Cell (document.getData(), getSceneManager(), mCellId));
+    mCell.reset (new Cell (document.getData(), getSceneManager(), mCellId, getPhysics()));
 }
 
 void CSVRender::UnpagedWorldspaceWidget::cellDataChanged (const QModelIndex& topLeft,
@@ -98,7 +98,7 @@ bool CSVRender::UnpagedWorldspaceWidget::handleDrop (const std::vector<CSMWorld:
         return false;
 
     mCellId = data.begin()->getId();
-    mCell.reset (new Cell (getDocument().getData(), getSceneManager(), mCellId));
+    mCell.reset (new Cell (getDocument().getData(), getSceneManager(), mCellId, getPhysics()));
 
     update();
     emit cellChanged(*data.begin());
diff --git a/apps/opencs/view/render/worldspacewidget.cpp b/apps/opencs/view/render/worldspacewidget.cpp
index 5656b2dd6..448153d37 100644
--- a/apps/opencs/view/render/worldspacewidget.cpp
+++ b/apps/opencs/view/render/worldspacewidget.cpp
@@ -24,6 +24,7 @@
 #include "../widget/scenetooltoggle.hpp"
 #include "../widget/scenetoolrun.hpp"
 
+#include "../world/physicsmanager.hpp"
 #include "../world/physicssystem.hpp"
 
 #include "elements.hpp"
@@ -147,6 +148,10 @@ CSVRender::WorldspaceWidget::WorldspaceWidget (CSMDoc::Document& document, QWidg
     connect (debugProfiles, SIGNAL (rowsAboutToBeRemoved (const QModelIndex&, int, int)),
         this, SLOT (debugProfileAboutToBeRemoved (const QModelIndex&, int, int)));
 
+    // associate WorldSpaceWidgets (and their SceneManagers with Documents, then create physics if new document
+    mPhysics = CSVWorld::PhysicsManager::instance()->addSceneWidget(document, this);
+    mPhysics->addSceneManager(getSceneManager(), this);
+
     initDebug();
     mMouseEventTimer = new QElapsedTimer();
     mMouseEventTimer->invalidate();
@@ -166,6 +171,9 @@ CSVRender::WorldspaceWidget::WorldspaceWidget (CSMDoc::Document& document, QWidg
 
 CSVRender::WorldspaceWidget::~WorldspaceWidget ()
 {
+    mPhysics->removeSceneManager(getSceneManager());
+    CSVWorld::PhysicsManager::instance()->removeSceneWidget(this);
+
     delete mMouseEventTimer;
 
     // For debugging only
@@ -457,6 +465,12 @@ void CSVRender::WorldspaceWidget::updateOverlay()
 {
 }
 
+CSVWorld::PhysicsSystem *CSVRender::WorldspaceWidget::getPhysics()
+{
+    assert(mPhysics);
+    return mPhysics;
+}
+
 // mouse picking
 // FIXME: need to virtualise mouse buttons
 //
@@ -525,8 +539,7 @@ void CSVRender::WorldspaceWidget::mouseMoveEvent (QMouseEvent *event)
                             pos.z += mZOffset;
                             getSceneManager()->getSceneNode(mGrabbedSceneNode)->setPosition(pos+planeResult.second-mOrigMousePos);
                             mCurrentMousePos = planeResult.second;
-                            CSVWorld::PhysicsSystem::instance()->moveSceneNodes(mGrabbedSceneNode,
-                                pos+planeResult.second-mOrigMousePos);
+                            mPhysics->moveSceneNodes(mGrabbedSceneNode, pos+planeResult.second-mOrigMousePos);
                             updateSceneWidgets();
                         }
                     }
@@ -634,8 +647,7 @@ void CSVRender::WorldspaceWidget::mouseReleaseEvent (QMouseEvent *event)
                         // print some debug info
                         if(isDebug())
                         {
-                            std::string referenceId =
-                                CSVWorld::PhysicsSystem::instance()->sceneNodeToRefId(result.first);
+                            std::string referenceId = mPhysics->sceneNodeToRefId(result.first);
                             std::cout << "ReferenceId: " << referenceId << std::endl;
                             const CSMWorld::RefCollection& references = mDocument.getData().getReferences();
                             int index = references.searchId(referenceId);
@@ -719,8 +731,8 @@ void CSVRender::WorldspaceWidget::mouseDoubleClickEvent (QMouseEvent *event)
             // debug drawer.  Hence only the first subview that creates the debug drawer
             // can view the debug lines.  Will need to keep a map in OEngine if multiple
             // subviews are to be supported.
-            //CSVWorld::PhysicsSystem::instance()->setSceneManager(getSceneManager());
-            CSVWorld::PhysicsSystem::instance()->toggleDebugRendering(getSceneManager());
+            //mPhysics->setSceneManager(getSceneManager());
+            mPhysics->toggleDebugRendering(getSceneManager());
             flagAsModified();
         }
     }
@@ -746,8 +758,7 @@ void CSVRender::WorldspaceWidget::wheelEvent (QWheelEvent *event)
                 Ogre::Vector3 pos = mOrigObjPos;
                 pos.z += mZOffset;
                 getSceneManager()->getSceneNode(mGrabbedSceneNode)->setPosition(pos+mCurrentMousePos-mOrigMousePos);
-                CSVWorld::PhysicsSystem::instance()->moveSceneNodes(mGrabbedSceneNode,
-                    pos+mCurrentMousePos-mOrigMousePos);
+                mPhysics->moveSceneNodes(mGrabbedSceneNode, pos+mCurrentMousePos-mOrigMousePos);
                 updateSceneWidgets();
             }
             break;
@@ -844,8 +855,7 @@ std::pair<std::string, Ogre::Vector3> CSVRender::WorldspaceWidget::terrainUnderC
     float x = (float) mouseX / getCamera()->getViewport()->getActualWidth();
     float y = (float) mouseY / getCamera()->getViewport()->getActualHeight();
 
-    std::pair<std::string, Ogre::Vector3> result =
-        CSVWorld::PhysicsSystem::instance()->castRay(x, y, getSceneManager(), getCamera());
+    std::pair<std::string, Ogre::Vector3> result = mPhysics->castRay(x, y, getSceneManager(), getCamera());
     if(result.first != "")
     {
         // FIXME: is there  a better way to distinguish terrain from objects?
@@ -867,8 +877,7 @@ std::pair<std::string, Ogre::Vector3> CSVRender::WorldspaceWidget::objectUnderCu
     float x = (float) mouseX / getCamera()->getViewport()->getActualWidth();
     float y = (float) mouseY / getCamera()->getViewport()->getActualHeight();
 
-    std::pair<std::string, Ogre::Vector3> result =
-        CSVWorld::PhysicsSystem::instance()->castRay(x, y, getSceneManager(), getCamera());
+    std::pair<std::string, Ogre::Vector3> result = mPhysics->castRay(x, y, getSceneManager(), getCamera());
     if(result.first != "")
     {
         // NOTE: anything not terrain is assumed to be an object
@@ -910,17 +919,16 @@ void CSVRender::WorldspaceWidget::placeObject(const std::string sceneNode, const
     getSceneManager()->getSceneNode(sceneNode)->setPosition(pos);
 
     // update physics
-    std::string refId = CSVWorld::PhysicsSystem::instance()->sceneNodeToRefId(sceneNode);
-    const CSMWorld::CellRef& cellref =
-            mDocument.getData().getReferences().getRecord (refId).get();
+    std::string refId = mPhysics->sceneNodeToRefId(sceneNode);
+    const CSMWorld::CellRef& cellref = mDocument.getData().getReferences().getRecord (refId).get();
     Ogre::Quaternion xr (Ogre::Radian (-cellref.mPos.rot[0]), Ogre::Vector3::UNIT_X);
     Ogre::Quaternion yr (Ogre::Radian (-cellref.mPos.rot[1]), Ogre::Vector3::UNIT_Y);
     Ogre::Quaternion zr (Ogre::Radian (-cellref.mPos.rot[2]), Ogre::Vector3::UNIT_Z);
 
     // FIXME: adjustRigidBody() seems to lose objects, work around by deleting and recreating objects
-    //CSVWorld::PhysicsSystem::instance()->moveObject(sceneNode, pos, xr*yr*zr);
-    std::string mesh = CSVWorld::PhysicsSystem::instance()->sceneNodeToMesh(sceneNode);
-    CSVWorld::PhysicsSystem::instance()->replaceObject(mesh, sceneNode, refId, cellref.mScale, pos, xr*yr*zr);
+    //mPhysics->moveObject(sceneNode, pos, xr*yr*zr);
+    std::string mesh = mPhysics->sceneNodeToMesh(sceneNode);
+    mPhysics->replaceObject(mesh, sceneNode, refId, cellref.mScale, pos, xr*yr*zr);
 
     // update all SceneWidgets and their SceneManagers
     updateSceneWidgets();
@@ -928,8 +936,7 @@ void CSVRender::WorldspaceWidget::placeObject(const std::string sceneNode, const
 
 void CSVRender::WorldspaceWidget::updateSceneWidgets()
 {
-    std::map<Ogre::SceneManager*, CSVRender::SceneWidget *> sceneWidgets =
-        CSVWorld::PhysicsSystem::instance()->sceneWidgets();
+    std::map<Ogre::SceneManager*, CSVRender::SceneWidget *> sceneWidgets = mPhysics->sceneWidgets();
 
     std::map<Ogre::SceneManager*, CSVRender::SceneWidget *>::iterator iter = sceneWidgets.begin();
     for(; iter != sceneWidgets.end(); ++iter)
diff --git a/apps/opencs/view/render/worldspacewidget.hpp b/apps/opencs/view/render/worldspacewidget.hpp
index e74c40e86..431a023be 100644
--- a/apps/opencs/view/render/worldspacewidget.hpp
+++ b/apps/opencs/view/render/worldspacewidget.hpp
@@ -13,6 +13,7 @@ namespace CSMWorld
 {
     class UniversalId;
 }
+
 namespace CSVWidget
 {
     class SceneToolMode;
@@ -21,6 +22,11 @@ namespace CSVWidget
     class SceneToolRun;
 }
 
+namespace CSVWorld
+{
+    class PhysicsSystem;
+}
+
 class QElapsedTimer;
 
 namespace CSVRender
@@ -35,6 +41,7 @@ namespace CSVRender
             CSVWidget::SceneToolToggle *mSceneElements;
             CSVWidget::SceneToolRun *mRun;
             CSMDoc::Document& mDocument;
+            CSVWorld::PhysicsSystem *mPhysics;
 
             enum MouseState
             {
@@ -113,6 +120,8 @@ namespace CSVRender
 
             virtual void updateOverlay();
 
+            CSVWorld::PhysicsSystem *getPhysics();
+
             virtual void mouseMoveEvent (QMouseEvent *event);
             virtual void mousePressEvent (QMouseEvent *event);
             virtual void mouseReleaseEvent (QMouseEvent *event);
diff --git a/apps/opencs/view/world/physicssystem.cpp b/apps/opencs/view/world/physicssystem.cpp
index 0342ede95..320367906 100644
--- a/apps/opencs/view/world/physicssystem.cpp
+++ b/apps/opencs/view/world/physicssystem.cpp
@@ -13,13 +13,8 @@
 
 namespace CSVWorld
 {
-    PhysicsSystem *PhysicsSystem::mPhysicsSystemInstance = 0;
-
     PhysicsSystem::PhysicsSystem()
     {
-        assert(!mPhysicsSystemInstance);
-        mPhysicsSystemInstance = this;
-
         // Create physics. shapeLoader is deleted by the physic engine
         NifBullet::ManualBulletShapeLoader* shapeLoader = new NifBullet::ManualBulletShapeLoader();
         mEngine = new OEngine::Physic::PhysicEngine(shapeLoader);
@@ -28,13 +23,6 @@ namespace CSVWorld
     PhysicsSystem::~PhysicsSystem()
     {
         delete mEngine;
-        // FIXME: update maps when SceneManagers are destroyed
-    }
-
-    PhysicsSystem *PhysicsSystem::instance()
-    {
-        assert(mPhysicsSystemInstance);
-        return mPhysicsSystemInstance;
     }
 
     // FIXME: looks up the scene manager based on the scene node name (highly inefficient)
@@ -60,7 +48,7 @@ namespace CSVWorld
         }
 
         if(!foundSceneManager)
-            return; // FIXME: this should be an exception
+            return; // FIXME: should this be an exception
 
         // update physics, only one physics model per referenceId
         if(mEngine->getRigidBody(referenceId, true) == NULL)
diff --git a/apps/opencs/view/world/physicssystem.hpp b/apps/opencs/view/world/physicssystem.hpp
index 3232a5e90..8fadf6c8a 100644
--- a/apps/opencs/view/world/physicssystem.hpp
+++ b/apps/opencs/view/world/physicssystem.hpp
@@ -30,12 +30,10 @@ namespace CSVWorld
 {
     class PhysicsSystem
     {
-            static PhysicsSystem *mPhysicsSystemInstance;
             std::map<std::string, std::string> mSceneNodeToRefId;
             std::map<std::string, std::map<Ogre::SceneManager *, std::string> > mRefIdToSceneNode;
             std::map<std::string, std::string> mSceneNodeToMesh;
-            std::list<Ogre::SceneManager *> mSceneManagers; // FIXME: change to list per OEngine
-            //std::list<CSVRender::SceneWidget *> mSceneWidgets; // FIXME: change to list per OEngine
+            std::list<Ogre::SceneManager *> mSceneManagers;
             std::map<Ogre::SceneManager*, CSVRender::SceneWidget *> mSceneWidgets;
             OEngine::Physic::PhysicEngine* mEngine;
             std::multimap<std::string, Ogre::SceneManager *> mTerrain;
@@ -44,9 +42,6 @@ namespace CSVWorld
 
             PhysicsSystem();
             ~PhysicsSystem();
-
-            static PhysicsSystem *instance();
-
             void addSceneManager(Ogre::SceneManager *sceneMgr, CSVRender::SceneWidget * scene);
             void removeSceneManager(Ogre::SceneManager *sceneMgr);